Which ethnic group has larger and more numerous sweat glands?

The correct answer is based on the understanding of sweat gland density and distribution across different ethnic groups. Research indicates that people of African descent typically have a higher number of sweat glands per square centimeter of skin compared to other ethnic groups. The physiological traits of African individuals often include larger and more numerous eccrine glands, which are responsible for producing sweat and facilitating thermoregulation.

This characteristic is particularly advantageous in hot climates, where effective sweating is crucial for maintaining body temperature. While the term "Asian" could refer to various sub-groups with diverse physiological traits, the question emphasizes a comparative perspective on sweat gland abundance among broader ethnic categories. Therefore, African individuals stand out in this context for having relatively more abundant and larger sweat glands, which is the basis for this selection. The other groups mentioned might not exhibit the same level of density or size in their sweat glands as a collective characteristic, making them less representative in this particular context.